No time to test this right now but there are a couple of problems I can spot.
1. This deck doesn't use much
, meaning that the quanta generated by your mark is partly wasted. I think it would be better to either change the mark and drop Unstoppable, or take more cards from
. That would make the deck more efficient.
2. Like many have said, and you also say in your original post, this deck is highly combo-dependent which can be a bit of a problem at times.
Other than that, it looks good to me.